Silo.



UNITED 1 STATES" PATENT OFFICE.

WILLIAM. H LIMBERG, or PLYMOUTH, WISCONSIN.

Specification of Letters Patent.

Patented March 26, 1907.

Application filed October 26, 1906. Ser al No. 340,765.

To all whom u; may concern:

Be it known that I, WILLIAM H. LIM'BERG, a citizen ofthe United States, residing at Plymouth, in the county of Sheboygan and State of Wisconsin, have invented anew and useful Silo, of which the following is a specification.

' Thisinvention relates to silos, and more particularly to doors therefor and its object is to provide a simple form of door which obuse of door-casings in silos'made of'v viates the cement, brick, &c.

ing and to bind therein, so as to render the.

A still furtherobject is'to provide novel means for bracing the walls of the door, said bracing means constituting'a ladder.

Another object is to provide a sectional door adaptedto be forced into the door-'open-.

7 door practically air-tight.

With these and other objects in view the invention consists of certain novel features of construction and combinations of parts,

which will be hereinafter more fully described, and pointed out in the claims.-

In the accompanying drawings is'shown the preferred form of the invention;

In said drawings,-Figure 1 is an elevation of a portion of a silo having a door therein constructed in accordance with the present invention. Fig.- 2 is a horizontal through a portion'of the silo and the door, and Fig. .3 is a vertical section through the door. v

Referring to the figures by characters of reference, or any other suitable material and having an elongated door-opening 2 extending verti cally therein, the walls of said opening being tied together by'cross-rods 3, the ends 4 of which exteh at right angles thereto and are embedded within the walls, so as to hold them at 'proper relation with each other at all-v t mes, said rods also constituting a ladder.

f A recess 5 is formed longitudinally within each wall of the door-opening, said recess being of gradually-mcreasing depth from its inner-to its outer end. The'se recesses constitute seats for door-sect1ons-6, the ends of which are beveled, so that said sections can be tightly wedged into the recesses 5 and across the door-openingZ. Moisture excludingmaterial 7 is arranged .upon the sections '6 and 1 upon the walls of the recesses 5, and another 5 layer ofdoor-sections 8, having beveled ends, E is forced onto this insulating material, so as the door-opening. 5

.to be'wedged firmly within but I do not limit door-opening;

section 1 is a silo made of brick, cement,

By forming a silo-door in the manner herein described the parts can be tightly wedged in place and held by frictional'contact and after once being placed in position will prevent the admission of air, &o. "The door is of very simple construction and can be very easily set up or removed. This form of door is particularly adapted for silos made of masonary, although it is of course understood. that the'same may b'e used in connection with any form of silo. a

The preferred form of the invention has been set forth in the foregoing description;

myself thereto, as I am aware that modifications may be made therein without departing from the spirit or sacri' ficing the advantages thereof, and I therefore reserve the right tomake such changes as fairly fall within the scope of the claims. What is claimed is- 1.v The combination with a silo having a Versely extending door sections arranged within the opening, an inner'series of transversely extending door-sections within the openin each section of the inner series being paralle with'and lapping two of the sections tion of the inner series being parallel with and lapping two'of the sections of the 'outer series,

the ends of both series of sections being beveled and adapted to wedge within the recesses, and moisture-excluding material disp'osed'betweentlie sections of the two series of an outer series oftrans-f and between the ends of said sections and the walls of the door-opening.

In testimony that I claim the foregoing as my own I have hereto afiixed my signaturein thepresence oftwo witnesses.

' WILLIAM H. LIMBERG. Witnesses:

' R. H. KOEHLER, O. A. 'S'OHEIBE. 

